Haley C. Overstreet, MD
Listed as an allergist, with 2 practice addresses in Round Rock and Austin, Texas.
Practice locations 2
Sinus and Allergy Specialists of Texas
1780 Round Rock Ave, Suite 200
Round Rock, TX 78681Sinus and Allergy Specialists of Texas
5929 Balcones Dr, Suite 200
Austin, TX 78731
From the records
- Specialty
- Allergist
- Records
- Medicare records: Family Practice (October 2026). Allergy specialty from the national provider registry.
- Medicare
- May accept the Medicare-approved amount as payment in full (Medicare assignment), according to CMS’s file. This applies to Original Medicare; Medicare Advantage plans have their own networks. What assignment means
- Telehealth
- Medicare’s file shows recent telehealth visits. It doesn’t mean every visit can be by video.
- Medical school
- University of Alabama School of Medicine, graduated 2009 (Medicare records)
- Registry record
- Last updated February 2024
- NPI
- 1700107323 (national provider registry)
A listing isn’t a check of a license or board certification, and it doesn’t tell you whether a doctor is taking new patients or accepts your insurance. Call the practice. How we list doctorsChecking your insurance
Is this your listing?
If you’re this doctor or work at their practice, claim the listing to add details such as languages, a website and a booking link. It’s free, and it never changes where a doctor appears in our lists.
From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors